NEET Physics Resistance & Resistivity MCQ Question
A cylindrical wire has a resistivity of 1.68 x 10^-8 Ωm, a length of 2 meters, and a cross-sectional area of 1 x 10^-6 m². What is the resistance of the wire?
0.0336 Ω
3.36 Ω
0.336 Ω
33.6 Ω
Correct Answer
Detailed Explanation
Resistance (R) is calculated using the formula R = ρl/A. Substituting the given values: R = (1.68 x 10^-8 Ωm)(2 m) / (1 x 10^-6 m²) = 0.0336 Ω.
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